Is it permissible to interrupt the recitation of the Qur’an by repeating words to help the mother pronounce them when she is completing the recitation of the Holy Qur’an?

It is desirable to recite the Qur'an frequently due to the great reward it entails, and this is particularly emphasized in Ramadan. Helping one's mother recite the Qur'an in this month is a great act of worship, and assisting her with reading falls under the category of piety and benevolence. Difficulty and hardship in reading increase the reward, for the Prophet, peace and blessings be upon him, said: "The one who is proficient with the Qur'an will be with the noble and righteous scribes (angels), and the one who reads the Qur'an and stutters over it, finding it difficult, will have two rewards." (Narrated by Muslim). There is no harm in interrupting one's recitation to teach and assist one's mother with reading.